2. 考研
  3. After a busy day of work and play，the body needs to rest. Sleep is necessary for good health. During this time，the body recovers

After a busy day of work and play，the body needs to rest. Sleep is necessary for good health. During this time，the body recovers

admin2012-02-07  41
问题     After a busy day of work and play，the body needs to rest. Sleep is necessary for good health. During this time，the body recovers from the activities of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day.
    There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other.
    Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly. This stage of sleep is called REM, which stands for rapid eye movement.
    If you have trouble falling asleep, some people recommend breathing very slowly and very deeply. Other people believe that drinking warm milk will help make you drowsy. There is also an old suggestion that counting sheep will put you to sleep!
The word drowsy in the last paragraph means______.
选项 A、sick
B、standing up
C、deep asleep
D、a little sleepy
答案D
解析 首先需要确定"drowsy"一词在文章中的位置，理解上下文的含义。在本文中，上下文的概念都是讲怎样帮助人们睡着，所以作为并列关系，“drowsy”一词的意思就是“瞌睡(a little sleepy)”。其他选项的意思与本题的语境不相符。
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